What is the usage of nmcli command?

The usage of nmcli command is: 1. Check the interface information; 2. Check the connection information; 3. Start or stop the interface; 4. Create a connection; 5. Modify the IP address; 6. Modify whether the connection is self-starting. ;7. Delete the connection; 8. Configure the dns of the connection.

The usage of nmcli command is:

#nmcli command is a command after redhat7 or centos7, this command can be completed All configurations on the network card work and can be written to the configuration file to take effect permanently.

Display parameters

show display detailed information

status display brief information

##1. View interface information:

Command options and parameters can be abbreviated

2. View connection information

3. Start/stop interface

or

P.S: It is recommended to use nmcli device disconnect(connect) interface-name

Because this command is used, the connection will not be automatically connected before starting a connection or when an external event occurs

4. Create a connection

Create Dynamically obtain the connection of the IP address, con-name is the name of the created connection, ifname is the physical device, network interface

Create a static IP address connection

PS: Creating a connection means creating an ifcfg-${con-name} file in the /etc/sysconfig/network-scripts/ directory. If multiple connections are created, they will be created at the same time. Create multiple files.

5. Modify the IP address

The modification will not take effect, it requires

6. Modify whether the connection is self-starting (default self-starting)

7. Delete the connection

8. Configure the connection dns

Configure dns for the connection

Add dns for the connection

## After modifying con, you need Reactivate the connection to take effect

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